Stone's character in Willy Wonka famously uttered the line, "Violet, you're turning violet!" after his gum-smacking daughter ballooned into a human blueberry because she broke one of Wonka's rules.Stone earned a Tony nomination in 1959 for his role in Redhead. His TV credits include L.A. Law, Gunsmoke, M*A*S*H, General Hospital, Hill Street Blues and Mission: Impossible.